Multiple Choice
The atoms of a particular element all have the same number of protons as neutrons.Which of the following must be true?
A) The atomic weight must be a whole number.
B) The mass number for each atom must equal the atomic weight of the element.
C) The mass number must be exactly twice the atomic number for each atom.
D) All of these are true.
Correct Answer:

Verified
Correct Answer:
Verified
Q251: Na<sub>2</sub>S is named<br>A)sodium disulfide.<br>B)sodium sulfide.<br>C)sodium(II)sulfide.<br>D)sodium sulfur.
Q252: Hydrochloric acid is an example of<br>A)a compound.<br>B)an
Q253: Water is an example of<br>A)a compound.<br>B)an element.<br>C)a
Q254: Which of the following elements is classified
Q255: How many electrons are in the ion,Zn<sup>2+</sup>?<br>A)28<br>B)30<br>C)32<br>D)65
Q257: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4940/.jpg" alt=" -Which of the
Q258: Ethane is an example of<br>A)a compound.<br>B)an element.<br>C)a
Q259: How many protons (p)and neutrons (n)are in
Q260: To the nearest whole number,the number of
Q261: A cake is an example of<br>A)a compound.<br>B)an